Innersole



9, 1937. ll. v. POLE 7 5 4 INNERSOLE I Fi1ed Aug. 10 1934 3 jammmi 'hesiv'e substance.

Patented Feb. 9, 193 7 UNITED STATES.

PATENT LOFFICE INNERSOLE Jesse V. Poole, Abin'gton, Mass, assignor to Puri-' tan Manufacturing Company, Boston, Mass., a.

corporation of Massachusetts Application August 10, 1934, Serial No. 739346 7 Claims.

The present invention relates to innersoles for boots and shoes, particularly those which are used in Goodyear shoe making and are provided with a lip or rib for receiving the stitches which unite the upper, the Welt and the innersole together.

which is amply strong for the purpose, flexible, and may be made from inexpensive materials at a minimum of cost. A further object is to provide strip material in a form and condition such that it can be applied to innersole blanks by the makers of innersoles, in such-manner as to produce a ribbed innersole suitable for "shoes of the supplement the strength of its attachment to the body by a layer of duck or equivalent fabric applied in any of the ways familiar inthe well known Gem type of innersole, or by a strip of such fabric which is tucked into the inner angle between the body and rib and is adhesively united to the adjacent surfaces of both.

Referring to the drawing which illustrates the invention,--

Fig. 1 is a plan view of the innersole as seen looking toward the ribbed side thereof;

Fig. 2 is a cross section on line 2-2 of Fig. 1,

and a perspective view of the parts adjacent to the line of section;

Fig. 3 is a similar view showing the same combination reinforced by a layer of so called Gem duck tucked into the inner angle of the rib;'

Fig. 4 is a similar view showing a modified form of reinforcement consisting of a strip of duck or the like which is united to the inner face of the rib and to a zone of relatively narrow width on the face of the body contiguous to the rib;

Fig. 5 is a perspective view of a fragm'ent of the strip from which the stitch receiving rib is made;

Fig. 6 is a perspective view of the strip bent up as applied to the body;

Fig. 7 is a view similar to Fig. 4 showing a modiiied design of skived strip.

The main object is to provide for the 'use of theindustry an' innersole of this character der the trade name of Onco. This material is a. water-laid web or felt of cellulose iibers containing rubber. In its preferred commercial form the nbers are rened wood pulp containing a high proportion of alpha-cellulose; and the rubber is the coagulated residue of compounded rubber latex substantially. enveloping the fibers.

formed with residual porosity sufficient to permit passage of air throughit for ventilation of the .shoes into which such innersoles are built. It is highly resilient, tough and strong, The body or blank of the innersole is died out from a sheet of this material of any desired thickness, for instance or thereabout; and the rib strip is cut of desired width from a similar sheet of the same or any other desired thickness.

The rib strip is skived longitudinally at and adjacent to one edge so as to form a scarf or bevel c of suitable width to forma base fiange when bent up at an angle to the balance of the strip. The skiving cut may be made 'so as to bevel the skived zone uniformly to a more or less thin edge, as shown in Figs. 5 and 6; or to make the skived part of nearly uniform thickness but substantially thinner than the rest of the strip, forming a distinct shoulderd and flange,

part e, as shown in Fig. 7. Before attachment" to the body, the skived or iiange part is bent up at a distinct angle to the body of the strip, as shown n Fig, 6. The bending action may be performed, or the strip prepared for easy subsequent bending on a deiini'te line, by running the strip between rolls suitably shape'd and located to crease or indent the strip in the surface opposite to the skived side. When the strip is skived with a uniform bevel, the bend thus made is located near'the thickest part of the bevel, so that the junction between the bevel- Such a strip, of uniform'width and skived, may

be cut "of any desired length from sheets of the herein described material, the length of which is practically unlimited, Such strip material is thus marketable as a manufacture suitable to be used -by makers of shoes and inner soles in fabricating their products. Preferably such strips are of about in width and in thickness, so skived as to make the upstanding part or rib proper about fi high. This leaves about V or slightly more as the width of the surface which comes in contact with the face of the sole. But'equivalent strips may be made of other dimensions suitable to obtain any desired height of rib proper and any desired width of surface for application As prepared for innersole use, the material is location prescribed for the rib, with the fiange directed outwardly. The zone of the body against which the rib is thus placed may be also Goa ted" with adhesive. The adhesive used is preferably a freely ud rubber latex or equivalent dispersion of rubber; but may be rubber cement of other cemented'union is stronger and more efficientsafely out of the path of the needle.

turned upvat its edges,'

character. In any event, whether the adhesive substance is latex or cement of other character,

it is preferably of such fluidity as to penetrate to some extent into the residual pores of the material, both of the body and the rib, additionally enveloping the iibers in those portions to which it is applied. Drying of the latex or other cement effects a firm bond between the body and the entire contacting area ous iiange. v

The innersole constructed as thus described is a substantially integral entity, for the rubber of the bonding fluid, coalescing with that already contained in the iibrous material, makes a substantially continuous phase of rubber throughout the body and rib. The bond between these originally separate parts may be likened to an autogenous weld; and it is indeed substantially as strong as the material itself. l

While-I claim the foregoing combination as a most important factor of the present invention. I do not limit my claim for protection exclusively thereto, but include also the combination of body and rib maderof any other materials suitable for nnersoles wherein the rib is provided. with an integral base fiange and'is bonded to' the body by intervening cement. Even though the body and rib, or either of them, be made from materials (leather, leather-board, textile fabric, etc.) which do not coalesce homogeneously with cement, the

than that afforded by a sewed seam, since it is distributed uniformly over the entire area of contact between the" rib and its base ilange on the one hand and the innersole body on the other.

such extended lmi'on enables the base ange to s limit of the skived zone.

be made of slight thickness, or beveled to a thin edge without sacriiice of essential strength. V

Such thinning of the base iiange has the advantage'in shoemaking' that liability of the sewing needletearing or cutting the rib away from the body is substantially eliminated. In stitching the inseam of a welt shoe the operator holds the shoe 'so that the needle passes through the rib from the inside close to the adjacent surface of the innersole, 'and frequently at such an inclina tion that the needle would also pass into an external base ange of much thickness. But the thinjlange of the present construction is located This feature is useful independently of the utility of the artificial leather construction. j 7 Innersoles made according to this invention can be made of thin stock; much thinner than that required for nnersoles the body itself is needed when such thin material is used, the innersole can be reinforced by a sheet of fabric, such as that shown at f in Fig. 3, covering the whole area of the body within the rib and aomsia of the rib and its contiguof which the rib is made r by channeling. If strength additional to that ofbeing tucked into the' inner rib angle and cemented to the contiguous areas .of the body and rib. Or the rib and its union with the body may be reinforced by a strip "of fabric, such as that shown at gin Fig. 4, tucked into the inner rib angle and cemented to the adjacent surface of the rib and to the zone of the body 1 contiguous thereto, but not covering the whole included area of the body. such reinforced in-. nersoles ar'e claimed as factors of the invention, but without limitation thereto of my broadest protection What I claim and desire to secure by Letters Patent is: r A

1. An innersole consisting of a body and a rib formed from an originally separate strip, the body and rib being of nbrous material containing rubber in its composition, and being bonded to gether by rubber in substantially integral union with the rubber content of the nbrous material.

2. An innersole consisting of a body and a rib of fibrous material,- both containing a bonding material substantially encasin-g their iibers, said rib having a base fiange extending at an angle to the rib proper, lying against a surface gf the body and being in substantially integralwelded union therewith by means of such bonding material.

3. An innersole comprising a body of felted cellulose fiber containing rubber substantially encasing the f bers throughout the mass thereof, a rib strip in contact with one face of such body, and a bond of rubber between the body and rib strip in substantially integral coalesced union with the rubber content thereof.

4. An innersole as set forth in-claim 1, combined with a reinforcing sheet of fabric adhesively connected to one side of the rib and the adjacent surface of the body.

5. The manufacture consisting of" a strip' of brous material containing rubber among and' around its ber-s, adapted to provide the stitch- 6. An innersole consisting of a body, combined with a rib made from an originally separate strip having an integral outtumed base iiange in surface contact with a surface of the body adjacent to the edge thereof, and in honded connection with the body at the contacting surfaces; said flange extending outward. toward the adjacent edge of the body and being of reduced thickness with respect to the rib proper whereby to dimini'sh liability of the iiange being penetrated or dislodged by a sewing needle inthe course of connecting the innersole t the upper and welt of a shoe.

7. An innersole consisting of a body, combined with a rib made from an originally separate strip having an integral outtumed base ilange in surface contact with a' surface of the body adjacent to the edge thereof, and in honded connection with the body at the contacting surfaces; said ange extending outward toward the adjacent edge of the' body and being of gradually diminishing thickness from the base of the rib proper to its outer edge.

- JESSE V. POOLE. 

